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US1788822A - Pencil with sliding lead - Google Patents

Pencil with sliding lead Download PDF

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Publication number
US1788822A
US1788822A US372485A US37248529A US1788822A US 1788822 A US1788822 A US 1788822A US 372485 A US372485 A US 372485A US 37248529 A US37248529 A US 37248529A US 1788822 A US1788822 A US 1788822A
Authority
US
United States
Prior art keywords
lead
pencil
rod
sliding lead
holding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US372485A
Other languages
English (en)
Inventor
Cata Ramon Marpons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1788822A publication Critical patent/US1788822A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/003—Propelling pencils with lead sections or lead cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/20—Combinations of writing implements with other articles with other articles having storage compartments

Definitions

  • the presentinventioii refersto' pencils With sliding leads; Tliecomnion or customary pencils are conipos'edrof: a stick 'of graphita'orf oi graphitel aidclay, an'devenof caolin, or other material Whicliis'notnecessary' to specify, the saidV ystick beigcall'ed lead andbeing enclosed in" ai,cylindrical or prisrn'aticy covering', o Wood, which4v protects it, and gives body to' the pencil, thus makingit convenient to use.
  • Figi il afverticalsectionl of the proi'lectingj tube sliowingfthe'pusli rod in elevation and'v a device for' sharpening the; lead :of thepencil.
  • a device i is arranged' stl" consisting of an elastic clamping spring with two pivots 5-5 holding it elastically in its place.
  • a device 7 can be provided, which presses on the point at its sides 8 8.
  • a device whichis composed of a protecting tube 10 whichV has a push rod 9 fixed in its centre.
  • the rod 9 is utilized, Xed in the protecting tube.- rlhis way of pushing down the lead is of the greatest importance, for it ensures the maximum convenience and security. All that need be done is to place the pencil in the protecting tube 10, and then the rod 9 is automatically introduced into the bore 12, when it will act on the lead through the pres-sure 'i hat can be exerted with the hand. In this wayl any person, even a child can make the lead of the pencil move withV the greatest facility.
  • the additional rod 12 is introduced, thisv rod being held bythe spring grip 13 yin the interior of the protecting tube l0 in the bore of the pencil, and thus the fixed rod 9 protected in the tube 10 will push the additional rod 12, and the lead can be made to emerge to the extent necessary everytime this is required, until it comes to an end.
  • Sharpener 141 This sharpener can be formed in different ways, and may be constructed as a cone, madeV of carborundum or other rasping material 14, which also carries a holding screw for the blade and the blade 16.
  • Another form of'construction would be, for example, a cone formed by a series of strips whose cutting edges touch the lead of the pencil and sharpen it by simple friction.
  • FIG. 6 In the attached drawing yet another form of execution is shown of the Sharpener (Fig. 6)
  • a cone 14 made in one piece of metal or other appropriate material.
  • a blade 16 held by a screw 15'.
  • a means is provided for giving the required degree of sharpness to the lead.
  • lead pencils consists in the formation of two half circles of wood or other suitable material which are glued and after putting the lead between them pressed together solidly.
  • the manufacture of the pencils with sliding leads and especially with very thin lead ⁇ would be preferently performed otherwise.
  • the mode of manufacture would consist in forming also the two half circles and to joinr them by suitable means but instead of putting the lead in the channel so formed, there would be rods orV wires, of the same diameter as the lead had toV be placed between those two halves. After they have been tted together perfectly well, the rod orv wire is extracted and the lead introduced through the end part with great ease. The leads so introduced will have exactly the size needed and during the writing they will not move in any direction, but remain in their place.
  • a pencil with shiftable lead flattened on the inner end comprising in combination a hollow body of the pencil, a metal clip having two armsr adapted to grip around the inner end of the lead guided in said hollow body and a locking element on each of said arms adapted to prevent the lead from sliding back into said body when the pencil is being used.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Drawing Aids And Blackboards (AREA)
US372485A 1927-02-10 1929-06-20 Pencil with sliding lead Expired - Lifetime US1788822A (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
ES348339X 1927-02-10
GB1450/28A GB296618A (en) 1927-02-10 1928-01-16 Pencil with shiftable lead
CH130176T 1928-01-25
DE1788822X 1928-10-27
CH140451T 1929-04-13
CH159182T 1931-10-19
FR727151T 1931-10-21
NL58875A NL34205C (xx) 1927-02-10 1931-10-22

Publications (1)

Publication Number Publication Date
US1788822A true US1788822A (en) 1931-01-13

Family

ID=40627326

Family Applications (1)

Application Number Title Priority Date Filing Date
US372485A Expired - Lifetime US1788822A (en) 1927-02-10 1929-06-20 Pencil with sliding lead

Country Status (6)

Country Link
US (1) US1788822A (xx)
BE (2) BE348339A (xx)
CH (3) CH130176A (xx)
FR (2) FR647884A (xx)
GB (2) GB296618A (xx)
NL (1) NL34205C (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902754A (en) * 1955-07-07 1959-09-08 Lorenian Eugenia Manufacture of slidable-core pencils

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902754A (en) * 1955-07-07 1959-09-08 Lorenian Eugenia Manufacture of slidable-core pencils

Also Published As

Publication number Publication date
BE348339A (xx) 1928-02-29
FR647884A (fr) 1928-12-03
CH130176A (de) 1928-11-30
FR727151A (fr) 1932-06-14
CH159182A (de) 1932-12-31
GB296618A (en) 1928-09-06
CH140451A (de) 1930-06-15
BE383660A (xx) 1931-11-30
GB330057A (en) 1930-06-05
NL34205C (xx) 1934-12-15

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